\begin{table}[ht]
\centering
\caption{Summary Stats for Outcome Variables Vendor Survey - Endline. Superscripts in column names identify groups. Superscripts in cells indicate that a value is significantly different from the value for the superscripted group} 
\begingroup\scriptsize
\begin{tabular}{l|lllll|llll}
  \hline
Variable & Overall Mean & BOTH$^1$ & BU$^2$ & Control$^3$ & TD$^4$ & SD & Min & Max & N \\ 
  \hline
\makecell[l]{Pay Because Consequences\\(Unclustered $t$-Test)} & 3.665 & 3.668 & 3.669 & 3.642 & 3.681 & 0.677 & 1.000 & 4.000 & 2518 \\ 
   \hline
\end{tabular}
\endgroup
\end{table}
